<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>code标签</title>
    </head>
    <body>
        <h1>code标签</h1>
        <code>
            #include "stdio.h"
            int main(){
                printf("Hello HTML5");
            }
        </code>
    </body>
</html>